Hi
Chris Bergstresser wrote:
> Hi all --
>
> So I'm trying to use lattice graphics, but I want to use a
> sunflower plot, which doesn't seem to be part of lattice. No problem,
> I put together the following code, which mostly works -- *except* for
> the first graph it generates. If it opens the graphic device, then it
> draws the xygrid, clears the device, then draws the sunflowerplot.
> All subsequent output operations work fine, as does rerunning the code
> with the graphic device open.
>What's going on? How can I fix this? I tried looking through the
> family of dev.* to no success. I can use trellis.device to open the
> device, but that causes the same problem.
>
> -- Chris
>
> library("grid");
> library("lattice");
> library("gridBase");
>
> trellis.par.set(theme = col.whitebg());
> outer.plot.limits = c(0.75, 5.25);
> inner.plot.limits = c(0.92, 5.08);
> sunpanel <- function(x, y, subscripts, ...) {
> pushViewport(viewport(x = 0.5, y = 0.5, just = "center"));
> par(plt = gridPLT(), new = TRUE);
> sunflowerplot(x, y, axes = FALSE, xlab = "", ylab = "",
> xlim = inner.plot.limits, ylim = inner.plot.limits);
> popViewport(1);
> }
>
> for (i in 1:10) {
> x = round(runif(100, 1, 5));
> y = round(runif(100, 1, 5));
> print(xyplot(y ~ x, xlim = outer.plot.limits, ylim = outer.plot.limits,
> main = i, aspect = "iso", between = list(x = 1, y = 0),
> panel = sunpanel));
> }
Try this modification ...
for (i in 1:10) {
x = round(runif(100, 1, 5));
y = round(runif(100, 1, 5));
# CHANGE
# Start a traditional graphics page
plot.new()
print(xyplot(y ~ x,
xlim = outer.plot.limits, ylim = outer.plot.limits,
main = i, aspect = "iso",
between = list(x = 1, y = 0),
panel = sunpanel));
}
This should make the first page work AND remove the warning about
"calling par(new=) with no plot".
Paul
--
Dr Paul Murrell
Department of Statistics
The University of Auckland
Private Bag 92019
Auckland
New Zealand
64 9 3737599 x85392
[EMAIL PROTECTED]
http://www.stat.auckland.ac.nz/~paul/
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